Chemical energy for respiration is stored in the bonds of
Oxygen molecules
water molecules
carbon dioxide molecules
glucose molecules
glucose molecules
The chemical energy for respiration is stored in the bonds of glucose molecules.
When glucose molecules are broken down through the process of cellular respiration, energy is released. This energy is used by cells to perform various functions such as muscle contractions, protein synthesis, and overall maintenance of cellular processes.
To understand why glucose contains chemical energy, we need to look at its molecular structure. Glucose is a carbohydrate, and its chemical formula is C6H12O6. Each glucose molecule consists of six carbon (C), twelve hydrogen (H), and six oxygen (O) atoms.
The energy stored in glucose is a result of the energy-rich bonds between these atoms. During cellular respiration, glucose is broken down in a series of enzyme-catalyzed reactions. These reactions release the stored energy by breaking the bonds between carbon and hydrogen atoms, ultimately producing carbon dioxide (CO2) and water (H2O) as waste products.
So, while oxygen molecules are necessary for the process of respiration, they are not where the energy is stored. The energy comes from breaking down the bonds within the glucose molecule.